[#boost-urls-url_view_base-has_fragment]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/url_view_base.adoc[url_view_base]::has_fragment
:relfileprefix: ../../../
:mrdocs:


Return true if a fragment is present

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/url_view_base.hpp#L2054[boost/url/url_view_base.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
has_fragment() const noexcept;
----

== Description


This function returns true if the url        contains a fragment.        An empty fragment is distinct from        no fragment.


=== Example

[,cpp]
----
assert( url_view( "http://www.example.com/index.htm#anchor" ).has_fragment() );
----

=== Complexity

Constant.


=== Exception Safety

Throws nothing.


=== BNF

[,cpp]
----
URI           = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.5[3.5. Fragment (rfc3986)]

Return true if a fragment is present

This function returns true if the url        contains a fragment.        An empty fragment is distinct from        no fragment.


=== Example

[,cpp]
----
assert( url_view( "http://www.example.com/index.htm#anchor" ).has_fragment() );
----

=== Complexity

Constant.


=== Exception Safety

Throws nothing.


=== BNF

[,cpp]
----
URI           = scheme ":" hier-part [ "?" query ] [ "#" fragment ]

relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
----

=== Specification

* link:https://datatracker.ietf.org/doc/html/rfc3986#section-3.5[3.5. Fragment (rfc3986)]



== See Also


xref:boost/urls/url_view_base/encoded_fragment.adoc[encoded_fragment],            xref:boost/urls/url_view_base/fragment.adoc[fragment].



xref:boost/urls/url_view_base/encoded_fragment.adoc[encoded_fragment],            xref:boost/urls/url_view_base/fragment.adoc[fragment].






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